. >>> 80,000 californians have signed up for obamacare. kpix 5 is gathering experts for a hotline. representatives will be here at kpix 5 all day today to answer your questions. simply call between 11 a.m. and 7 p.m. and the number is 1-888-5-helps- u. >>> all right. 4:41 now. and unbelievable rescue caught on tape. how the man survived under water for days after his boat sank in the atlantic. >> and a mystery tipper is spreading the wealth at bay area restaurants. the message that he leaves behind along with thousands of dollars. we'll be right back. ,, ,,,,,,,,,,,,,, underwater for almost 3 day. after his tugboa >>> check this amazing video of an underwater rescue that man trapped under water for almost three days after his tugboat sank in may. he was trapped in a four-foot square air pocket. he was then rescued and spent two days in a decompression chamber and returned home in good shape. >>> a big tipper is visiting bay area residents. who is this? kpix 5 reporter christin ayers reports. >> reporter: it began with two men having a steak dinner here at san francisco's harris' re